[WIP]Add WebPrivateHeapPtr and use it for speech platform layer.

Source/core/speech/SpeechInputResultList.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef SpeechInputResultList_h
 #define SpeechInputResultList_h
 
 #if ENABLE(INPUT_SPEECH)
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/speech/SpeechInputResult.h"
+#include "heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
-class SpeechInputResultList : public RefCounted<SpeechInputResultList>, public ScriptWrappable {
+class SpeechInputResultList : public RefCountedWillBeGarbageCollectedFinalized<SpeechInputResultList>, public ScriptWrappable {
+    DECLARE_GC_INFO;
 public:
-    static PassRefPtr<SpeechInputResultList> create(const SpeechInputResultArray& results);
+    static PassRefPtrWillBeRawPtr<SpeechInputResultList> create(const SpeechInputResultArray& results);
 
     // Methods from the IDL.
     size_t length() { return m_results.size(); }
     SpeechInputResult* item(unsigned index);
 
+    void trace(Visitor *);
+
 private:
     explicit SpeechInputResultList(const SpeechInputResultArray& results);
 
     SpeechInputResultArray m_results;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(INPUT_SPEECH)
 
 #endif // SpeechInputResultList_h